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Neurons (nerve cells) have three parts that carry out the functions of communication and integration: dendrites, axons, and axon terminals. They have a fourth part the cell body or soma, which carries out the basic life processes of neurons. The figure at the right shows a typical neuron. Neurons have a single axon is the output of the neuron. Axons are long (up to several feet long), but thin - - sort of like a wire. They are designed both in shape and function to carry information reliably and quickly over long distances (communication). Axons usually branch to connect to go to different neurons.
Confidence votes 73. The three main parts of a neuron are the soma (cell body), the axons, the long trailing output of a neuron and the dendrite or dendritic tree. Almost all neurons have axons, but not all axons have a dendritic tree.